<template>
  <div class="login-container">
    <div class="blank">
      <div class="brand">
        <img src="~@/assets/logo.jpg"
             alt="logo">
      </div>
      <div class="wrapper">
        <div class="box">
          <div class="inner-box">
            <el-form ref="loginForm"
                     :model="loginForm"
                     :rules="loginRules"
                     class="login-form"
                     autocomplete="on"
                     label-position="left">

              <div class="title-container">
                <h3 class="title">Sharlock</h3>
              </div>

              <el-form-item prop="username"
                            :error="errorUser">
                <span class="svg-container">
                  <svg-icon icon-class="user" />
                </span>
                <el-input ref="username"
                          v-model="loginForm.username"
                          :placeholder="$t('login.username')"
                          name="username"
                          type="text"
                          tabindex="1"
                          autocomplete="on" />
              </el-form-item>

              <el-tooltip v-model="capsTooltip"
                          content="大写锁定已开"
                          placement="right"
                          manual>
                <el-form-item prop="password"
                              :error="errorPassword">
                  <span class="svg-container">
                    <svg-icon icon-class="password" />
                  </span>
                  <el-input :key="passwordType"
                            ref="password"
                            v-model="loginForm.password"
                            :type="passwordType"
                            :placeholder="$t('login.password')"
                            name="password"
                            tabindex="2"
                            autocomplete="on"
                            @keyup.native="checkCapslock"
                            @blur="capsTooltip = false" />
                  <span class="show-pwd"
                        @click="showPwd">
                    <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
                  </span>
                </el-form-item>
              </el-tooltip>

              <el-form-item prop="captcha"
                            :error="errorCaptcha">
                <span class="svg-container">
                  <svg-icon icon-class="captcha" />
                </span>
                <el-input ref="captcha"
                          v-model="loginForm.captcha"
                          name="captcha"
                          type="text"
                          tabindex="3"
                          autocomplete="off"
                          @keyup.enter.native="handleLogin" />
                <span class="show-captcha"
                      @click="getCaptcha">
                  <img :src="imgCode"
                       style="width: 100%;height: 100%;cursor: pointer;" />
                </span>
              </el-form-item>
              <el-button :loading="loading"
                         type="primary"
                         style="width:100%;margin-bottom:30px"
                         @click.native.prevent="handleLogin">{{$t('login.logIn')}}</el-button>

              <!-- <div style="position:relative">
                <div class="tips">
                  <span>username : admin</span>
                  <span>password : any</span>
                </div>
                <div class="tips">
                  <span style="margin-right:18px;">username : editor</span>
                  <span>password : any</span>
                </div>
                <div class="tips">
                  <span style="margin-right:18px;">username : visitor</span>
                  <span>password : any</span>
                </div>

              </div> -->
            </el-form>
          </div>
        </div>
      </div>

    </div>
  </div>
  <!-- <div class="lowin lowin-blue"> -->

</template>

<script>
// import { validUsername } from '@/utils/validate'
import { getCaptcha } from '@/api/user'

export default {
  name: 'Login',
  data() {
    const validateUsername = (rule, value, callback) => {
      // if (!validUsername(value)) {
      //   callback(new Error('请输入正确的用户名'))
      // } else {
      //   callback()
      // }
      if (value.length < 4) {
        callback(new Error(this.$t('login.validateUsername')))
      } else {
        callback()
      }
    }
    const validatePassword = (rule, value, callback) => {
      if (value.length < 5) {
        callback(new Error('密码不能少于5位'))
      } else {
        callback()
      }
    }
    const validateCaptcha = (rule, value, callback) => {
      if (!value) {
        callback(new Error(this.$t('login.validateCaptcha.null')))
      } else if (value.length < 5) {
        callback(new Error(this.$t('login.validateCaptcha.wrong')))
      } else {
        callback()
      }
    }
    return {
      loginForm: {
        username: 'admin',
        password: 'admin',
        captcha: null
      },
      errorUser: null,
      errorPassword: null,
      errorCaptcha: null,
      loginRules: {
        username: [
          { required: true, trigger: 'blur', validator: validateUsername }
        ],
        password: [
          { required: true, trigger: 'blur', validator: validatePassword }
        ],
        captcha: [
          { required: true, trigger: 'blur', validator: validateCaptcha }
        ]
      },
      passwordType: 'password',
      capsTooltip: false,
      loading: false,
      showDialog: false,
      redirect: undefined,
      otherQuery: {},
      imgCode: null
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        const query = route.query
        if (query) {
          this.redirect = query.redirect
          this.otherQuery = this.getOtherQuery(query)
        }
      },
      immediate: true
    }
  },
  created() {
    // window.addEventListener('storage', this.afterQRScan)
    this.getCaptcha()
  },
  mounted() {
    console.log(process.env.VUE_APP_BASE_API)
    if (this.loginForm.username === '') {
      this.$refs.username.focus()
    } else if (this.loginForm.password === '') {
      this.$refs.password.focus()
    }
  },
  destroyed() {
    // window.removeEventListener('storage', this.afterQRScan)
  },
  methods: {
    checkCapslock(e) {
      const { key } = e
      this.capsTooltip = key && key.length === 1 && key >= 'A' && key <= 'Z'
    },
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.errorUser = ''
      this.errorPassword = ''
      this.errorCaptcha = ''
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          this.$store
            .dispatch('user/login', this.loginForm)
            .then(() => {
              this.$router.push({
                path: this.redirect || '/',
                query: this.otherQuery
              })
              console.log(this.$store.state)
              this.loading = false
            })
            .catch(error => {
              if (error.code === 1001) {
                this.errorUser = error.msg
              } else if (error.code === 1002) {
                this.errorPassword = error.msg
              } else if (error.code === 1003) {
                this.errorCaptcha = error.msg
              }
              this.loading = false
            })
        } else {
          console.log('error submit!!')
          return false
        }
      })
    },
    getOtherQuery(query) {
      return Object.keys(query).reduce((acc, cur) => {
        if (cur !== 'redirect') {
          acc[cur] = query[cur]
        }
        return acc
      }, {})
    },
    getCaptcha() {
      getCaptcha().then(data => {
        console.log(data)
        this.imgCode =
          'data:image/png;base64,' +
          btoa(
            new Uint8Array(data).reduce(
              (data, byte) => data + String.fromCharCode(byte),
              ''
            )
          )
      })
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg2: #283443;
$light_gray: rgb(36, 100, 197);
$cursor: #283443;

// @supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
//   .login-container .el-input input {
//     color: $cursor;
//   }
// }

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        // box-shadow: 0 0 0px 1000px $bg inset !important;
        // -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(50, 129, 219, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
// @import '~@/assets/css/auth.css';
$bg: #e5eaf0fa;
$dark_gray: #136a99;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;
  .blank {
    margin: 60px 0 0 0;
    .brand {
      overflow: hidden;
      width: 100px;
      height: 100px;
      margin: 0 auto -50px auto;
      border-radius: 50%;
      // -webkit-box-shadow: 0 4px 40px rgba(0, 0, 0, 0.07);
      box-shadow: 0 4px 40px rgba(0, 0, 0, 0.07);
      padding: 10px;
      background-color: #fff;
      z-index: 1;
      position: relative;
      img {
        width: 100%;
      }
    }
    .wrapper {
      position: relative;
      height: 100%;
      width: 360px;
      margin: 0 auto;
      .box {
        width: 100%;
        position: absolute;
        left: 0;
        .inner-box {
          background-color: #fff;
          // -webkit-box-shadow: 0 7px 25px rgba(0, 0, 0, 0.08);
          box-shadow: 0 7px 25px rgba(0, 0, 0, 0.08);
          padding: 60px 25px 25px 25px;
          text-align: left;
          border-radius: 3px;
        }
      }
    }
  }

  .tips {
    font-size: 14px;
    color: #000;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: #000000;
      margin: 20px auto 20px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
  .show-captcha {
    position: absolute;
    width: 120px;
    right: 5px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
.wrapper .inner-box {
  display: inline-block;
  width: 100%;
  border: none;
  color: #fff;
  padding: 15px;
  border-radius: 3px;
  background-color: var(--color-primary);
  -webkit-box-shadow: 0 2px 7px var(--color-semidark);
  box-shadow: 0 2px 7px var(--color-semidark);
  font-weight: 700;
  outline: 0;
  cursor: pointer;
  -webkit-transition: all 0.5s;
  -o-transition: all 0.5s;
  transition: all 0.5s;
}
</style>
